Answer:
 (write them out and convert them all into mixed fractions)
 (write them out and convert them all into mixed fractions)
 (find the LCD aka least common denominator)
 (find the LCD aka least common denominator)
 (add all numerators together)
 (add all numerators together)
 (this is improper, so you need to convert back to mixed by dividing)
  (this is improper, so you need to convert back to mixed by dividing)
 (this is your answer)
 (this is your answer)
 
        
             
        
        
        
N - 2 = 10n + 4/2
-2 = 9n + 4/2
-4/4 = 9n
-1 = 9n
-9 = n
N is -9.
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Step-by-step explanation:
no of days = (15×12)/20= 9 days
I hope this helps 
 
        
                    
             
        
        
        
Suggestion:
Try to explain this more clearly.
Why you should try my suggestion:
Because it will help others so they understand what your question is.
My note:
Hoped I helped, and I would love to be marked as Brainliest! Thanks!